thorium 中文意思是什麼

thorium 解釋
n. 名詞 【化學】釷。

  1. It is important that study gamma - ray spectrometry of field rock and soil in the earth ' s crust. its energies range between 30kev and 3000kev, where there is much information of natural radioactive nuclides, such as uranium, thorium, potassium, and information of artificial radioactive nuclides, such as cesium, americium, cobalt, and information of the results in interaction between gamma - ray and earth ' s crust

    研究表明：野外地面射線能譜測量主要研究地殼巖石土壤中產生的能量約為30kev 3000kev的射線，這裡面包含著鈾、釷、鉀等天然放射性核素信息，核工程活動產生的大量人工放射性核素信息以及射線與地殼相互作用產生的相關信息。
  2. Thorium tungsten electrode is the most commonly used tungsten in america and some other countries and is a good general use tungsten. especially, it performs well when overloaded with extra amperage

    釷鎢電極使用很普遍，釷元素雖具有低輻射性，但它相對純鎢來說，已經體現出重要的改進性能。
  3. But an unexpected fact was noted : certain minerals ( pitchblende, chalcolite, autunite ) had a greater activity than might be expected on the basis of their uranium or thorium content

    但是一個意外的事實引起了我的注意：某些礦物質（瀝青鈾礦物質、銅鈾雲母或鈣鈾雲母）的活性比根據其鈾或針含量所判斷的要高。
  4. Catalytic decoloring spectrophotometry for determination of trace thorium in coal gangue

    催化褪色光度法測定煤矸石中痕量釷
  5. Rare - earth metals and their oxides determination of thorium content arsenazo spectrophotometric method

    分光光度法測定釷量
  6. Marie found another called thorium.

    瑪麗發現了另一種物質，叫釷。
  7. Methods for chemical analysis of monazite concentrates - determination of thorium oxide content

    獨居石精礦化學分析方法氧化釷量的測定
  8. They recognized that in a thorium province pb208 would present complications.

    他們承認，含釷區內的Pb208會產生干擾。
  9. Determination of total rare earth and thorium oxide content

    稀土和釷總量的測定
  10. This is clearly confirmed by the detection of thorium

    這顯然證實了檢測釷
  11. The thorium nitrate volumetric rnethod for the determination of fluorine content

    硝酸釷容量法測定氟量
  12. Method for the determination of thorium dioxide in thorium tungsten alloys

    鎢釷合金中二氧化釷的測定方法
  13. Determination of thorium dioxide in thorium - tungsten alloys - weight method

    鎢釷合金中二氧化釷的測定重量法
  14. Determination of thorium oxide content

    氧化釷量的測定
  15. Study on adsorption thorium properties and mechanism of extraction resin

    5209萃淋樹脂吸附釷的性能和機理研究
  16. Methods for chemical analysis of thorium nitrate - determination of lead content

    硝酸釷化學分析方法鉛量的測定
  17. Since the unstable nuclei exist between actinides, including thorium and stable nuclei like lead and bismuth, explosive events such as supernovae are required to produce actinides

    自不穩定核之間存在著錒系元素，包括釷和穩定核像灌了鉛，鉍，爆炸性事件，如超需出示錒
  18. Their discovery marks the first abundance determination of the actinides element thorium in a star beyond the milky way, and follows the detection of thorium in more than ten stars within the milky way

    他們發現，標志著首豐測定的錒系元素釷星以外的銀河系，跟檢測釷十余恆星的銀河系
  19. Uranium and thorium in physical or chemical form or the mixture of uranium and thorium, excluding the nuclear fuel indicated in article 3

    二任何物理或化學形式之鈾、釷或二者之混合物；但不包括第三條所指之核子燃料在內。
  20. Neutron fluence measurement - part 6 : fast - neutron fluence determination with thorium fission detectors

    中子注量測量.第6部分:用釷裂變探測器測定快中子注量
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